Bullet rotatably shooting apparatus in a toy gun

ABSTRACT

A bullet rotatably shooting apparatus in a toy gun includes a rotating tube, a driving mechanism and a firing mechanism. The rotating tube has a central axis, and the rear end of the rotating tube is rotatably connected with a limiting tube fixed with a rotating tube shell. The rotating tube is positioned in the rotating tube shell. The driving mechanism drives the rotating tube to quickly rotate around a central axis. The firing mechanism is arranged at the rear end of the rotating tube, which fires bullets to rapidly pass through the rotating tube. The bullets cooperate with the rotating tube by friction and can slide rapidly along the central axis in the rotating tube and can rotate rapidly driven by the rotating tube, so that the bullets can be fired in a rapidly rotating state.

FIELD OF THE INVENTION

The invention relates to a toy gun technical field, and in particular, relates to a bullet rotatably shooting apparatus in a toy gun.

BACKGROUND OF THE INVENTION

A flight trajectory of a bullet shot by the common toy guns in the market is affected by gravity, which is more easily affected by air humility and wind etc. The flight trajectory of the bullet can easily deviate from a target or shooting object, which affects the shooting accuracy and range. In order to improve the shooting accuracy and range, the common methods mainly include the following three ways:

(1): Increase a warhead weight of a bullet to move a center of gravity forward the warhead to enhance the flight stability of the bullet. However, that, increasing the warhead weight of the bullet, often causes a high kinetic energy of bullet muzzle. And the security risks also increase, especially for toy guns, the requirements of security is very high. Therefor, there are some contradictions between the two.

(2): Set a ripper (also known as double tracks) in a barrel so that the bullet rotates around a central axis of the barrel (a longitudinal direction of the barrel, also namely a flight direction of the bullet) when the bullet is shot out. Under the motive force provided by a firing mechanism, when the bullet passes through the barrel, it is squeezed by the ripper to rotate around the central axis of the barrel and shot out of the barrel so that the flying bullet produces a certain degree of rotation to form a gyroscopic effect to enhance flight stability and optimize flight trajectory. However, because of all kinds of security mandatory requirements, the kinetic energy of the bullet muzzle in the toy guns is strictly limited, which results in that the toy guns have to be lightweight and with slow flight speeds. Under this case, the bullet, being hindered by the ripper when flying out of the barrel, will produce a very limited rotation due to large loss of kinetic energy, and the effect on improving flight stability is not obvious.

(3): Chinese patents CN200520121550.5 discloses a trajectory adjusting mechanism in toy guns, which mainly includes a barrel, a T-shaped tube sleeved at a rear end of the barrel, a rubber sleeve arranged between the barrel and the T-shaped tube, an upper wall of the rear end of the barrel is provided with a receiving hole, an upper wall of the T-shaped tube has a slot at a position facing to the receiving hole, the slot is provided with an elastic rubber column, which is pressed on the tube sleeve so that a wall of the rubber sleeve at this position is embed into the barrel through the receiving hole. The outside of the T-shaped tube is also equipped with an adjusting plate. One end of the adjusting plate is pressed on the elastic rubber column. The trajectory adjusting mechanism in toy guns makes the bullet rotate around the pitch axis (a transverse direction of the barrel, namely a vertical ejection direction) when firing. For a spherical bullet, it produces a certain degree of rotation around the pitch axis, using the velocity difference of the airflow above and below the bullet, thus producing an aerodynamic lift in an opposite direction of Earth's gravity to reduce the impact of gravity and increase the range. However, firstly, because of the limitation of the kinetic energy of the bullet muzzle in the toy gun, the bullet with lightweight and slow flight speeds, being hindered by internal obstruction when flying out of the barrel, will lose large kinetic energy and produce an extremely limited rotation, and is unable to form a significant difference of air flow on and below the bullet. Secondly, the rotation direction is perpendicular to the flight direction, and does not suppress or counteract all kinds of lateral interference affecting the firing accuracy. Thirdly, the above structure is only suitable for ball-shaped bullets.

For the above reasons, it is urgent to develop a bullet rotatably shooting apparatus in a toy gun to overcome the defects of existing technology.

SUMMARY OF THE INVENTION

The objection of the present invention is to overcome the defects of existing technology, to provide a bullet rotatably shooting apparatus in a toy gun, which makes the bullet quickly rotate to fly out of the barrel so as to improve the bullet shooting accuracy and the enjoyment of toy guns.

To achieve the objection, the present invention provides a bullet rotatably shooting apparatus in a toy gun, which includes a rotating tube, a driving mechanism and a firing mechanism. The rotating tube has a central axis, a rear end of the rotating tube is rotatably connected with a limiting tube. The limiting tube is fixed on a rotating tube shell, the rotating tube is positioned in the rotating tube shell. The driving mechanism drives the rotating tube to quickly rotate around the central axis. The firing mechanism is arranged at the rear end of the rotating tube, which fires a bullet to rapidly pass through the rotating tube. The bullet cooperates with the inner wall of the rotating tube by friction, which not only can slide rapidly along the direction of the central axis in the rotating tube but also can rapidly rotate driven by the rotating tube, so that the bullet can be fired in a rapidly rotating state.

The driving mechanism includes a motor and a rotating wheel secured on the rotating tube. The motor drives the rotating wheel to rotate, thereby driving the rotating tube to rotate.

The limiting tube is provided with a bullet chamber in its middle.

A fixed structure is provided between the rotating tube and the limited tube. The fixed structure comprises protrusions and grooves respectively arranged on the rotating tube and the limited tube. The protrusions and the grooves are matched with each other.

The bullet rotatably shooting apparatus in a toy gun also includes a pushing mechanism disposed between the rotating tube and the firing mechanism. The pushing mechanism can move towards the rotating tube and push the bullet into the rotating tube.

The pushing mechanism includes a pushing tube with a front end and a rear end. The front end of the pushing tube slides into the limiting tube, the rear end of the pushing tube slides into the firing mechanism. The pushing tube is fixed with a pushing portion or a handle.

A rear end of the limiting tube is provided with a muzzle. The front end of the pushing tube slides into the muzzle. A bottom of the handle is provided with a connecting portion passing through the muzzle to fix with the pushing tube.

Firstly, the bullet is pushed into the bullet chamber in the limiting tube. Then, the driving mechanism is started to drive the rotating tube to rotate. After that, the firing mechanism is started to push the bullet into the rotating tube. The rotating tube brings the bullet, which is passing rapidly through the rotating tube, to rotate so that the bullet flies out of the rotating tube in a rotating state.

Firstly, the bullet is pushed into the rotating tube. After that, the driving mechanism is started to drive the rotating tube to rotate and the bullet is rotated driven by the rotating tube. Then, the firing mechanism is started so that the bullet flies out of the rotating tube in a rotating state.

Firstly, the driving mechanism is started to drive the rotating tube to rotate. After that, the bullet is pushed into the rotating tube and the rotating tube drives the bullet to rotate. Then, the firing mechanism is started so that the bullet flies out of the rotating tube in a rotating state.

The firing mechanism includes an air cylinder provided with a piston. The piston and the air cylinder are connected by sliding and sealing. A piston rod of the piston is sleeved with a spring and a top of the piston rod is provided with a gun handle. The spring is against the piston at one end and against the gun handle at the other end.

The firing mechanism is provided with a lock catch at an end of the air cylinder. The piston is provided with a catching groove matched with the lock catch. When the piston pushes the spring to compress in place, the catching groove and the lock catch cooperate to lock the spring and prevent the spring from being reset without control.

The lock catch has an installing seat, which is provided with a locking column. The locking column is provided with an elastic member, an end of the elastic ember is fixed with a gun shell. The installing seat is provided with a through hole. The spring passes through the through hole. When the piston compresses the spring, the catching groove moves to the lock catch, the piston rod pushes the lock catch to compress the spring and passes through the through hole. Then under the force of the elastic member, the lock catch resets to clamp with the catching groove, thereby locking the spring and preventing it from resetting with the force of the elastic member.

The firing mechanism also includes a trigger. The lock catch is provided a trigger portion matched with the trigger. When the bullet is firing, the trigger is pulled, and the trigger pushes the trigger portion upward, thereby releasing the lock catch from the catch groove. The spring transiently resets to push the piston to move in the air cylinder towards the rotating tube. The gas inside the piston is pushed to create an air flow, which pushes the bullet to fly out in a rotating state.

One or more of the above technical schemes provided in embodiments of the present invention has at least one of the following technical advantages:

The bullet flies out in a rotating state, a gyroscopic effect is formed by the rotation of the bullet and simultaneously the direction of the surrounding air flow is changed, which not only increases the stability of the bullet and improves the firing accuracy, but also optimizes the flight trajectory and increases the effective range of the toy guns.

The bullet rotatably shooting apparatus in a toy gun drives the bullet to rotate by the friction between the rotating tube and the bullet, the overall structure of the toy gun is not changed, simple and effective, with reliable function.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical schemes in the embodiments in the present invention, the drawings needed in the embodiments or the prior technical description are briefly introduced below. Obviously, the drawings described below are only some embodiments in the present invention, and for those skilled in the art, additional drawings may be obtained according to the drawings below without creative work.

FIG. 1 is a perspective view of the bullet rotatably shooting apparatus in a toy gun of the present invention.

FIG. 2 is a cross sectional view of FIG. 1 .

FIG. 3 is a perspective view of the firing mechanism of the bullet rotatably shooting apparatus in a toy gun in one embodiment of the present invention. In order to show the structure of the firing mechanism clearly, a part of the shell is removed in FIG. 3 .

FIG. 4 is a perspective view of the firing mechanism of the bullet rotatably shooting apparatus in a toy gun in the other embodiment of the present invention. In order to show the structure of the firing mechanism clearly, a part of the shell is removed in FIG. 4 .

FIG. 5 is an exploded view of FIG. 4 .

FIG. 6 is an enlarge view at A in FIG. 2 .

FIG. 7 is a state view that the spring 54 compressed by the the piston 52 is locked by the lock catch 56.

DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS

In order to make the invention purpose, the technical scheme and the technical effect more clearly be understood, the invention is further explained in combination with the concrete embodiment below. It should be understood that the specific embodiments described herein are only used to interpret the invention and are not used to limit the invention.

Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the attached drawings, in which the same or similar labels represent the same or similar elements or elements with the same or similar function. The embodiments described below by reference to the attached drawings are exemplary and are intended to explain embodiments of the present invention and cannot be understood as limits in the present invention.

In the description of the embodiments of the present invention, it should be understood that the directional indications involved in the embodiments, such as the “upper”, “lower”, “left”, “right”, “front”, “rear”, “internal” and “external”, indicating orientation or location relationship, are based on the orientation or position relationship showed in the figures. These directional indications are only for describing the embodiments in the present invention and simplifying the description, rather than indicating or implying that the device or the element must be constructed and operated in a specified azimuth, which cannot be understood as a limitation of the present invention.

Further, the terms “first” , and “second” are used only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defining “first” and “second” may expressly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the “plurality of ” means two or more unless otherwise specifically limits.

Referring to FIG. 1 and FIG. 2 , the present invention is provided with a bullet rotatably shooting apparatus in a toy gun, which includes a rotating tube 30, a driving mechanism 50 and a firing mechanism 60.

The rotating tube 30 has a central axis 30 a, and the rear end of the rotating tube 30 is rotatably connected with a limiting tube 10. The limiting tube 10 is fixed with a rotating tube shell 91. The rotating tube 30 is positioned in the rotating tube shell 91. The driving mechanism 60 drives the rotating tube 30 to quickly rotate around a central axis 30 a. The firing mechanism 50 is arranged at the rear of the rotating tube 30, which emits a bullet 20 rapidly through the rotating tube 30. The bullet 20 cooperates with the inner wall of the rotating tube 30 by friction, which can slide rapidly along the direction of the central axis 30 a in the rotating tube 30 and can rotate rapidly driven by the rotating tube 30, so that the bullet 20 can be fired in a rapidly rotating state.

The bullet 20 is fired in a rapidly rotating state, a gyro effect is formed by the rotation of the bullet 20. The centrifugal force produced by the rotation of the bullet will keep the bullet itself in balance, and the rotation direction of the bullet will not be changed by gravity, but is maintained through inertia. Therefore the bullet can more accurately target the shooting target with little deviation, and the shooting accuracy is improved.

Simultaneously the rapid rotation of the bullet 20 can change the flowing direction of the air, which not only increases the stability of the bullet flight and improves the shooting accuracy, but also optimizes the flight trajectory and increases the effective range of the toy gun.

The rotating rube 30 frictionally cooperates with the bullet 20 so that the rotating rube 30 can drive the bullet 20 to rotate by the friction between them when the rotating rube 30 is rotating, and the bullet 20 can slide in the rotating tube 30, thereby the bullet 20 can fly out from the rotating tube 30 in a rotating state under the action of the firing mechanism 50. Specifically, the inner diameter of the rotating tube 30 is equivalent to the outer diameter of the bullet 20, and there are some friction between them. In the present invention, the friction between the inner wall of the rotating tube 30 and the outer wall of the bullet 10 drives the bullet 20 to rotate. This overall structure of the toy gun is not changed, simple and effective, with reliable function.

In some embodiments of the present invention, the limiting tube 10 includes two kinds of structure, an limiting tube 10 without chamber and a tube-chamber integrated limiting tube 10′. The rotating tube 30 rotatably connects the limiting tube 10, 10′. There is a fixed structure 70 to prevent the rotating tube 30 from taking off the limiting tube 10, 10′. The limiting tube 10, 10′ is fixed in a rotating tube shell 91 of the toy gun, thereby limiting the rotating tube 30 to fix the position of its central axis so as to prevent the bullet 30 from offsetting due to the rotation, and affect the shooting accuracy.

The structure of the tube-chamber integrated limiting tube 10′ and that of the limiting tube without chamber 10 are basically the same, the only difference is that the middle of the limiting tube without chamber 10 is elongated to form a bullet chamber 10 a, thereby forming the tube-chamber integrated limiting tube 10′. The bullet chamber 10 a is for the bullet to rapidly pass through.

In one embodiment of the present invention, referring to FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 , the toy gun also includes a pushing mechanism 40, which is disposed between the rotating tube 10 and the firing mechanism 50. The pushing mechanism 40 can move towards the rotating tube 30 and push the bullet 20 into the rotating tube 30.

The bullet 20 flies out of the rotating tube 30 in a rotating state in three ways.

The first way is as the follows: firstly, the bullet 20 is pushed into the rotating tube 30 by the pushing mechanism 40, Then, the driving mechanism 60 is started to drive the rotating tube 30 to rotating the bullet 20 by the friction between the rotating tube 30 and the bullet 20. Finally, the firing mechanism 60 is started to shoot the bullet 20 to fly out the rotating tube 30 in a rotating state. In the first way, the limiting tube without chamber 10 is preferred to choose.

The second way is as the follows: firstly, the driving mechanism 60 is started to drive the rotating tube 30 to rotate, then the bullet 20 is pushed into the rotating tube 30 by the pushing mechanism 40. The rotating tube 30 which is rotating drives the bullet 20 to rotate. Finally the firing mechanism 60 is started to shoot the bullet 20 to fly out of the rotating tube 30 in a rotating state. In the second way, the limiting tube without chamber 10 is preferred to choose.

The third way is as the follows: The driving mechanism 60 is started to drive the rotating tube 30 to rotate. Then, the firing mechanism 50 is started to shoot the bullet 20 to rapidly move in the rotating tube 30. Then the rotating tube 30 drives the bullet 20 which is rapidly passing through the rotating tube 30 to rotate by the friction between the rotating tube 30 and the bullet 20, thereby the bullet 20 can fly out of the rotating tube 30 in a rotating state. In the third way, the tube-chamber limiting tube 10′ is preferred to choose.

Referring to FIG. 2 and FIG. 6 , a fixed structure 70 is provided between the rotating tube 30 and the limited tube 10. The fixed structure 70 is used for preventing the rotating tube 30 from taking off the limiting tube 10. Specifically, the fixed structure 70 comprises protrusions 71 and grooves 72 respectively disposed between the rotating tube 30 and the limiting tube 10. The protrusions 71 and the grooves 72 cooperate with each other for preventing the rotating tube 30 from falling off the limiting tube 10. It should be understood that the fixed structure 70 is not limited to the structure described in this embodiment, and that any transformation of the fixed structure 70 without departing from the basic conception of the present invention should be considered within the protection scope defined by the claim of the present invention.

Referring to FIG. 3 and FIG. 4 , the driving mechanism 60 includes a motor 61 and a rotating wheel 63 fixed on the outer wall of the rotating tube 30. The motor 61 drives the rotating wheel 63 to rotate, thereby driving the rotating tube 30 to rotate. Specifically, the shaft of the motor 61 is provided with a driving wheel 62, which is directly engaged with the rotating wheel 63, or connects the rotating wheel 63 by an intermediate transmission wheel 64, so that the motor 61 can drive the rotating tube 30 to rotate. It should be understood that the driving mechanism 60 can be a mechanical structure commonly used in prior art, such as a pulley structure and a sprocket structure. It should be understood that the driving mechanism 60 is not limited to the structure shown in the embodiment, and that any transformation of the driving mechanism 60 without departing from the basic conception of the present invention should be considered within the protection scope defined by the claim of the present invention.

In one embodiment according to the present invention, referring to FIG. 1 and FIG. 2 , the pushing mechanism 40 includes a pushing tube 41 with a front end 41 a, sliding into the rear end 12 of the limiting tube 10, and a rear end 41 b, sliding into the firing mechanism 50. The pushing tube 41 is fixed with a pushing portion or a handle 42 by a connecting portion. When the toy gun is used, the user holds the handle 42 by a hand and pushes the pushing tube 41 along the limiting tube 10, thereby pushing the bullet 20 into the rotating tube 30.

In another embodiment according to the present invention, referring to in FIG. 4 , the pushing mechanism 40 includes a pushing tube 41′ and a handle 42′ fixed on the pushing tube 41′. The front end 41 a′ of the pushing tube 41′ slides into the rear end 12 of the limiting tube 10, and the rear end 41 b′ of the pushing tube 41′ slides into the firing mechanism 50. When the toy gun is used, the user holds the handle 42′ and pushes the pushing mechanism 40 to move between the limiting tube 10 and the firing mechanism 50 so that the bullet 20 in the limiting tube 10 is pushed into the rotating tube 30 or the firing mechanism 50 is pushed in a state to be fired. Specifically, the rear end 12 of the limiting tube 10 is provided with an upper muzzle 13, and the front end 41a′ of the pushing tube 42′ slides into the upper muzzle 13. The bottom of the handle 42′ is provided with a connecting portion 43, passing through the upper muzzle 13 and fixed with the pushing tube 41′. Preferably, the handle 42′ is disposed in a cross shape with the pushing tube 41′. Preferably, the handle 42′ has a horizontal bar 421, with two grip portions 422 respectively at both ends of the horizontal bar 421. The grip portions 422 are provided with raised lines for increasing the friction between the user's hand and the handle 42′ and increasing the comfort when the handle 42′ is held.

A bullet box 80 is provided under the limiting tube 10. The bullet box 80 is used for storing the bullets 20 and delivering the bullets 20 to the limiting tube 10. Specifically, the bottom of the limiting tube 10 is provided with a lower muzzle 14, which is communicating with the bullet box 80. The bullets 20 enter the limiting tube 10 through the lower muzzle 14 from the bullet box 80. Specifically, the bullet box 80 is provided with an elastic portion 83 and the elastic portion 83 has a bullet seat 84 on its top. The bullets 20 are stacked one by one on the bullet seat 84 to compress the elastic portion 83. After the bullet 20 at the top is pushed into the limiting tube 10 by the compressed elastic portion 83, it is defined by the limiting tube 10 to counter the compressed elastic portion 83 so that only the bullet at the top can enter the limiting tube 10. It should be understood that the bullet box 80 may adopt other structures to connect to the limiting tube 10. The structure of the bullet box 80 and the connection structure are common knowledge to those skilled in the art and are no longer recited in this invention.

It should be understood that the toy gun is provided with a gun shell 92 outside of the limiting tube 10 and the firing mechanism 50. The gun shell 92 covers the limiting tube 10, the firing mechanism 50, and the pushing mechanism 40 that may be provided. In some embodiments, the top of the bullet box 80 is provided with a fitting part 81, which, loaded under the gun shell 92 and close to the limiting tube 10, cooperates with the gun shell 92. It should be understood that the bullet box 80 should be disassembly connected with the gun shell 92 to facilitate loading the bullet 20. The structure of the fitting part 81 and the gun shell 92 can be set flexibly, according to the needs of the designer of the toy gun. And the structure of the fitting part 81 and the gun shell 92 can vary which is known to those skilled in the art, the invention is not limited it. After the bullet 20 at the top enters the limiting tube 10, the bullet 20 may be defined by the gun shell 92 so as to counter the elasticity of the elastic portion 83 so that only one bullet can enter the limiting tube 10.

The firing mechanism 50 has generally common structure in the toy gun, the function of the firing mechanism 50 is firing bullet to fly out of the muzzle 35 of the toy gun. Preferably, the firing mechanism 50 is a pneumatic structure. Specifically, the firing mechanism 50 includes an air cylinder 51 with a piston 52, the piston 52 and the inner wall of the air cylinder 51 are sliding and sealing connection. A piston rod 53 of the piston 52 is sleeved with a spring 54. A top of the piston 52 is provided with a gun handle 55. The spring 54 is against the piston 52 at one end and against the gun handle 55 at the other end. The rear end of the pushing tube 41 is inserted into the air cylinder 51 and connected with the air cylinder 51 by the fixed structure 70. The rear end of the pushing tube 41 pushes the piston 53 to move away from the rotating tube 30, thereby pushing and compressing the spring 54 so as to prepare for the firing mechanism 50 to be started to fire the bullet 10.

Referring to FIG. 2 , FIG. 5 and FIG. 7 , the firing mechanism 50 is also provided with a lock catch 56 at an end of the air cylinder 51. The piston 52 is provided with a catching groove 57 matched with the lock catch 56. When the piston 525 pushes the spring 54 to compress in place, the catching groove 57 and the lock catch 56 cooperate to lock the spring 54 and prevent the spring 54 from resetting without control. Specifically, the lock catch 56 has an installing seat 561.The installing seat 561 is provided with a locking column 563 with an elastic member 564. An end of the elastic member 564 is fixed with a gun shell 62. The installing seat 561 is provided with a through hole 565. Referring to FIG. 7 , the spring 54 passes through the through hole 565. When the piston 52 compresses the spring 54, the catching groove 57 moves to the lock catch 56. The piston rod 56 pushes the lock catch 56 to compress the elastic member 564 and passes through the through hole 565. Then, under the force of the elastic member 564, the lock catch 56 resets to clamp with the catching groove 57 and lock the spring 54, thereby preventing it from resetting with the force of the spring 54.

The firing mechanism 50 also includes a trigger 58 under the lock catch 58. The lock catch 56 is provided a trigger portion 566 matched with the trigger 58. When the bullet 20 is firing, the user pulls the trigger 58 to push the trigger portion 566 upward so as to move the lock catch 56 upward, thereby releasing the lock catch 56 from the catch groove 57. The spring 54 transiently resets and pushes the piston 52 to rapidly move in the air cylinder 51 towards the rotating tube 30. The gas in the piston 52 is pushed to create an air flow, and the air flow passes through the pushing tube 41 and/or the limiting tube 10 and enters the rotating rube 30, thereby pushing the bullet to fly out in a rotating state at a high speed.

Preferably, the front of the rotating tube 30 is provided with the muzzle 35.

Preferably, there is a rotating tube shell 91, a gun shell 92 and a firing mechanism shell 93 respectively outside of the rotating tube 30, the limiting tube 10 and the firing mechanism 50. The rotating tube shell 91, the gun shell 92 and the firing mechanism shell 93 cooperate and are connected, making the shape of toy gun beautiful and convenient to hold. The motor of the driving mechanism 60 is secured on the rotating tube shell 91. The trigger 58 is installed on the firing mechanism shell 93. The installing method is conventional and is known to those skilled in the art, and the invention will not be described herein.

The above are only better embodiments of the invention and are not used to limit the invention, and any modifications, equivalent replacements, and improvements made within the spirit and principles of the invention shall be included within the protection of the invention. 

What is claimed is:
 1. A bullet rotatably shooting apparatus in a toy gun, comprising: a rotating tube having a central axis therein, a rear end of said rotating tube is rotatably connected with a limiting tube, said limiting tube is fixed on a rotating tube shell, said rotating tube is positioned in said rotating tube shell; a driving mechanism, driving said rotating tube to quickly rotate around said central axis; a firing mechanism, arranged at said rear end of said rotating tube and firing a bullet to rapidly pass through said rotating tube; said bullet cooperates with said rotating tube by friction, which not only can slide rapidly along said central axis in said rotating tube but also can rapidly rotate driven by said rotating tube, so that said bullet can be fired in a rapidly rotating state.
 2. The bullet rotatably shooting apparatus in a toy gun according to claim 1, wherein said driving mechanism includes a motor, a rotating wheel is secured on said rotating tube, said motor drives said rotating wheel to rotate, thereby driving said rotating tube to rotate.
 3. The bullet rotatably shooting apparatus in a toy gun according to claim 1, wherein a middle of said limiting tube is provided with a bullet chamber.
 4. The bullet rotatably shooting apparatus in a toy gun according to claim 1, wherein a fixed structure is provided between said rotating tube and said limited tube; said fixed structure comprises protrusions and grooves respectively arranged on the rotating tube and said limited tube, said protrusions and said grooves are matched with each other.
 5. The bullet rotatably shooting apparatus in a toy gun according to claim 3, wherein a fixed structure is provided between said rotating tube and said limited tube; said fixed structure comprises protrusions and grooves respectively arranged on said rotating tube and said limited tube, said protrusions and the grooves are matched with each other.
 6. The bullet rotatably shooting apparatus in a toy gun according to claim 1, wherein also comprising a pushing mechanism disposed between said rotating tube and said firing mechanism, said pushing mechanism can move towards said rotating tube and push said bullet into said rotating tube.
 7. The bullet rotatably shooting apparatus in a toy gun according to claim 6, wherein said pushing mechanism includes a pushing tube with a front end, sliding into said limiting tube, and a rear end, sliding into said firing mechanism; said pushing tube is fixed with a pushing portion or a handle.
 8. The bullet rotatably shooting apparatus in a toy gun according to claim 7, wherein a rear end of said limiting tube is provided with a muzzle, said front end of said pushing tube slides into said muzzle; a bottom of said handle is provided with a connecting portion, passing through said muzzle to fix with said pushing tube.
 9. The bullet rotatably shooting apparatus in a toy gun according to claim 3, wherein firstly, said bullet is pushed into said bullet chamber in said limiting tube; then, said driving mechanism is started to drive said rotating tube to rotate; finally, said firing mechanism is started to push said bullet into said rotating tube, said rotating tube brings said bullet, which is passing rapidly through said rotating tube, to rotate so that said bullet flies out of said rotating tube in a rotating state.
 10. The bullet rotatably shooting apparatus in a toy gun according to claim 1, wherein firstly, said bullet is pushed into said rotating tube; then, said driving mechanism is started to drive said rotating tube to rotate, said bullet is rotated driven by said rotating tube; finally, said firing mechanism is started so that said bullet flies out of said rotating tube in a rotating state.
 11. The bullet rotatably shooting apparatus in a toy gun according to claim 1, wherein firstly, said driving mechanism is started to drive said rotating tube to rotate; then, said bullet is pushed into said rotating tube, and said rotating tube drives said bullet to rotate; finally, said firing mechanism is started so that said bullet flies out of said rotating tube in a rotating state.
 12. The bullet rotatably shooting apparatus in a toy gun according to claim 1, wherein said firing mechanism comprising an air cylinder with a piston, said piston and said air cylinder are sliding and sealing connection; a piston rod of said piston is sleeved with a spring, a top of said piston rod is provided with a gun handle, said spring is against said piston at one end and against said gun handle at the other end.
 13. The bullet rotatably shooting apparatus in a toy gun according to claim 2, wherein said firing mechanism comprising an air cylinder with a piston, said piston and said air cylinder are sliding and sealing connection; a piston rod of said piston is sleeved with a spring, a top of said piston rod is provided with a gun handle, said spring is against said piston at one end and against said gun handle at the other end.
 14. The bullet rotatably shooting apparatus in a toy gun according to claim 12, wherein said firing mechanism is provided with a lock catch at an end of said air cylinder; said piston is provided with a catching groove matched with said lock catch; when said piston pushes said spring to compress, said catching groove and said lock catch cooperate to lock said spring and prevent said spring from being reset.
 15. The bullet rotatably shooting apparatus in a toy gun according to claim 14, wherein said lock catch has an installing seat with a locking column; said locking column is provided with an elastic member, an end of said elastic member is fixed with a gun shell; said installing seat is provided with a through hole, said spring passes through said through hole; when said piston compresses said spring, said catching groove moves to said lock catch; said piston rod pushes said lock catch to compress said spring and passes through said through hole, then under a force of said elastic member, said lock catch resets to clamp with said catching groove and lock said spring, thereby preventing it from resetting with said force of said elastic member.
 16. The bullet rotatably shooting apparatus in a toy gun according to claim 15, wherein said firing mechanism also includes a trigger, said lock catch is provided a trigger portion matched with said trigger; when said bullet is firing, said trigger is pulled, said trigger pushes said trigger portion upward, thereby releasing said lock catch from said catch groove; said spring transiently resets to push said piston to move in said air cylinder towards said rotating tube, and said gas inside said piston is pushed to create an air flow, which pushes said bullet to fly out in a rotating state. 